Drip Irrigation: Learn how to set up a system to save time and water. Tom Harris will demonstrate components and how to modify an old sprinkler system into a modern drip system. 10 a.m. Cibolo Nature Center & Farm, 33 Herff Road, Boerne. www.cibolo.org or 830-249-4616. Free.

Upcoming

Roses: The San Antonio Rose Society will discuss antique roses and growing roses in containers. Ed Bradley will discuss the type of containers, planting mediums and maintenance requirements. Randolph Blakeman will give a presentation about old garden roses and why they're so popular. 7 p.m. March 11. San Antonio Garden Center, 3310 N. New Braunfels Ave. www.sarosesociety.org. Free.